Geological Observations im YorksMre, Derbyshire, &c. g3 



to see this lady. She now complained of sore throat with 

 difficult deglutition. On inspection, there appeared slight 

 inflammation of the tonsils extending to the palate, which 

 continued stationary about a fortnight, without any other 

 symptom of disease; when, during the use of the warm 

 bath and gentle diaphoretics, venereal blotches on the fore- 

 head and nodes on the shin bones arose. It appeared on 

 investigation, that the lady had contracted the di-ease from 

 her husband, who had had the disorder previous to his 

 marriage, and who had been ajjparently though not radi- 

 cally cured. Relating this case to an eminent surgeon^ 

 ho mentioned that a patient of his, a lady, who had con- 

 tracted the venereal disease in her accouchement from the 

 above mentioned accoucheur, had no other symptom but 

 what first showed itself in the throat. 



N'j. 1, Cbrendoa Steet, Dublin, Feb. 1, IS 12. 



XV. Geclonical Observations, in Correction of and Addition 

 to the Paper on the Great Derbyshire Denudation, in our 

 last, and the Report on Derbyshire, &c. ; relating prin- 

 cipally to Coal-measures near to the Chalk Strata ; the 

 Course of the 3d and 4th Grit Rocks arid Crowsfone 

 through Yorkshire, and the Termination of its Coal-field 

 Norlhivard : the Limits of the Yellow Lime Rock, and 

 the Existence of Red Marl, Gypsum Beds, Strontian,c^c. 

 letiveen its Rocks, cSc. H^c. By Mr. John Farev Sen, 



To Mr. Tilloch. 



Sir, W HTiN the paper which vou have done me tlie ho- 

 nour to cojiy from the Fhilusophicai Transactions, into 

 yotir last Number, p. 2G, was sent to Sir Jobeph Banks, 

 but two or three sheets of n)y Derbyshire Report had been 

 printed : since which |)eriod, by the many comparisons of 

 my travelling and older notes and mineral maps, during 

 the |)riniing of that volume, from the letters and com- 

 mumciiions of my iriends, and two journeys which i made 

 into Yorkshire since the Report was published, some new 

 lights havt: been thrown on the north-eastern part of (he 

 great Derbyshire Denudation, the particulars of which I 

 am anxious to submit without delay to your geological 

 reader^, in the hope, that so'me of them will be able and 

 disposed freely to communicate new facts, and verifications 

 or eorrttlious of those which 1 have already, or am now 

 about to nicnlion, in order, that the remaining difficulties, 



with 



